Definition: You are given a question on high school government and politics. You are also given 4 answer options (associated with "A", "B", "C", "D"), out of which only one is correct. You need to answer the question by selecting the correct option. You should only answer with the choice letter, not the whole answer.
Input: Which principle was established by the Supreme Court's decision in Marbury v. Madison?
(A)One man, one vote (B)Separate but equal (C)Judicial review (D)Right to privacy

C